Fiber Polarization Controller – 0.5dB Loss, 2Hz, USB

SKU: FPOL

The FPOL Series All-Fiber Polarization Controllers are constructed from a single continuous optical fiber routed through four independently stepper motor–driven loop paddles. Each paddle functions as a rotatable waveplate, enabling full-range polarization control with ultra-low insertion loss, broad wavelength compatibility, and high optical power handling. Each fiber loop introduces controlled stress and rotation, leveraging birefringence modulation and geometric phase effects to precisely manipulate the polarization state of light. This all-fiber design ensures inherently broadband operation across transmitted wavelengths, with only minor wavelength dependence due to birefringence characteristics. The FPOL system can operate as either a polarization controller or a polarization scrambler. When integrated with an automatic control circuit and a polarimeter, it enables transformation of any input polarization state into a defined output state on the Poincaré sphere with high precision and repeatability. The system includes a user-friendly graphical interface accessible via RS-232, a wall-pluggable DC power supply, and support for high-power, connectorized fiber configurations. Custom software options and a Python-based command set are available for advanced system integration and control.